It burns when i pee, all std test came back clean had a yeast infection but was told too use monistat 7. still have the burning pain ! ! ! !?

Many possibilities: If a yeast infection is causing the burning, Monistat cures many but not all yeast infections, another med may be needed. Urine culture can identify bladder infection. Spasm of muscles in the pelvis especially the tiny muscles around the urethra can cause burning. Skin infection other than yeast, including herpes can have subtle signs but cause significant burning.